Annunciator



' E. WOOD ANNUNGIATOR 3 Sheets-Sheet 1 Filed Feb. 9, 1945 M f D 4 e 5 W 7 9 4 v M E l r a m H M. F O

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0 o o w a R ANNUNC'IATOR 3 Shets-Sheet 2 Filed Feb. 9, 1945 F. E. WOOD ANNUNCIATOR I May 31, 1949.

5 SheetsSheet 55 Filed Feb. 9, 1945 T/IEHHAL coA/T/mL Wu c 11 T07, FRENO/VTE-WOOD Patented May 31, 1949 UNITED STATES PATENT v OFFICE ANNUNCIATOR Fremont E. Wood, Long Beach, Calif.

Application February 9, 1945, Serial No. 577,094

1 Claim. 1

This invention relates to a dash board signal panel used in .conjunction with automotive oil pressure safety control (patent applied for May 6, 1943. Serial No. 485,918, now Patent No. 2,418,536) and motor ignition control (patent applied for May 27, 1943. Serial No. 488,731, now Patent No. 2,389,103).

Instead of using a globe as in either of the two inventions a coil is used with sufliciently high electrical resistance so that the ignition coil will not function when current is flowing through it, but the signal coil will release a pawl and let a spring loaded sign change positions from Normal to Hot (or similar legends) on the motor ignition control and from Normal to None (or similar legends) on the automotive pressure safety control in the event that either changes from the normal condition.

The signal coil is in a shunt circuit with the contacts of each device and contains an electromagnet which disengages a pawl from a yoke carrying the sign. The latter remains in the Hot or None position until it is manually reset to Normal, thus giving the operator warning of theunusual condition.

Other important objects and advantages of my invention will be apparent from a reading of the following description of the appended drawings, wherein for purposes of illustration, a preferred embodiment of my invention is shown.

In the drawings: 7

Figure l is a front view of the panel signaling the engine temperature and oil pressure as normal;

Figure 2 is a rear elevation of the panel;

Figure 3 is a transverse section on line 33 of Figure 2;

Figure 4 is a vertical view of an emergency switch;

Figure 5 is a detail section on line 5-5 of Figure 3;

Figure 6 is a detail section on line 6-6 of Figure 3;

Figure '7 is a perspective view of the temperature indicator;

Figure 8 is a detail view of a pawl engaging one leg of the signal carrying yoke, the dotted lines indicating the position of the pawl when disengaged from the yoke by the attraction of an electro-magnet.

Figure 9 is a detail section on line 9-9 of Figure 8;

Figure 10 is a wiring diagram including a thermal control and two diaphragm switches.

B indicates a box which may be open at the rear and which has in its front wall two windows 2, 3, one for indicating the engine temperature and the other for indicating the oil pressure as pointed out by legends above these windows. Behind the front wall and in vertical alignment with each window is a sign 4 which in the case of the engine temperature window bears the inscriptions Normal and beneath the latter Hot. The sign of the oil pressure window bears an appropriate inscription such as None in addition to and beneath the .top inscription Normal. Each of these signs is fastened to the parallel vertically disposed legs of a yoke Y the bight portion of which is always above the top wall of the box and the legs of which are guided in apertures in such wall and in the horizontal leg of a bracket b, the vertical leg of which is afiixed to the rear side of the front wall of the box. A spring 5 encircling a yoke leg bears with its lower end against the top surface of the horizontal bracket 1) leg and with its upper end against the lower edge of the sign carried by the yoke. I The outer leg of each yoke has a notch 6 on its inner side in which the forward end of a substantially horizontally disposed pawl arm p carried at its rear end by an armature a extending downwardly and secured at its lower end by a spring I to the vertical end portion of a U-shaped bracket U the upper leg of which is secured to the lower surface of the top wall. The two armatures shown are-held by resilient members I so as to be normally in such a position that eachof their arms occupies a notch described and thereby holds the yoke in a depressed position (Figure 2) in which the inscription appearing behind each window reads Normal and inwhich the springs 5 are compressed (Figures 2, 3, '7, 8)..

.In the midpoint of the bight portion of each U-bracket is a hole through which extends the threaded end of an electro-magnet M which carries a nut N upon its extrem end bearing against a washer 8 which in turn bears against the bracket supporting the magnet M, coil I I or l2, and armature a.

An electric lamp 9 is carried by the horizontal leg of each bracket.

To the bottom is secured a segmental member ID on which three binding posts L, C, R are mounted.

From the central binding post 0 a wire goes to the wire connecting the ends of the coils (Figures 2, 10). Each of the other binding posts is connected to the other end of a coil.

In Figure 10 is an oil pressure diaphragm switch 3 31 which is closed at normal oil pressure and which will open at abnormally low pressure and is connected to the oil conduit which conducts the oil from the pump to the oil pressure gauge. A vacuum diaphragm switch S2 is connected to the manifold and opens only when the motor is operating and forming a suction on the manifold. Each of these switches has a pair of contacts normally disconnected and adapted to be connected by the distortion or. the diaphragrn t v Qne contact of either switch vi's connected to the left-hand bind ing post L (Figures 2, 10) and thereby to one end of the oil pressur coil H and the other Contact;

of either switch is connected to the middle binding; a

post C.

Referring to Figure 10 a battery 1 qgs g goundeg at one side and the other side connected to a wire pen thenormallyr the h 0 Whhfliflwfeeleid b b nd n Posts d c d b v S e n mera 9 9 1 i ev outer bindingposts L,

wheneverjthefloi-l .b fipe g I l @31 mal the oil switch open an a current will go; through the oil pres sure coil l tand the magnet therein will disengage the pawl arn from the yoke so that the latter 'snaps upward exhibiting the legend Noneff thus givingwarlning to the operator ofthe uriusual'condition Should the temperature rise to an undesired level the thermostatics witch will; open and the electro-inag'net of the temperature coil l2-;wi ll cause the sign to rise andei-ghibit the inscription:

In case that the protective 1 devices function whilethe vehicleis in-a dangerous position e. g. a railroadtrackon which a fast :train'is approachrun the car toa saferlocatioh.

This panel brdashbbardsignal caneither re- .4 ,7 v 9.55,, temperature instruments .used on automobiles or i it can be placed inlorona car as ranr auxiliary device. Also either orrboth-theoiland temperature indicators can be used together or singly. 1f the place the conventionalioil pressure and engine device is used to replace the conventional-indicator mounted upon a dashboardgthe reese t yoke and perhaps. the size and- ,shapel of the device he eqn ee e t e 1 a Partn side] c nn cted wt e cl he id a e 1 h oi Fi giiire fl comprisesca. q lo er end o,

. .4 50; ing, the operator canclose the emergency switch of Figure 3 and'reestab'lish thevignition circuit and would require alterations in shape and location without departing from the spirit of the invention.

Although I have shown and described herein, a preferred embodiment of my invention, it is to be understood that numerous changes of the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

what is claimed, as new is:

A+motorcondition indicator comprising a case having a front wall formed with an opening, a bracket mounted against the inner surface of the front wall and projecting therefrom inwardly of the case below the opening, a yoke having arms extendinggyertically through the bracket and the top wall of the casingand slidable vertically therethrough, a sign carried by the arms of said yoke baclg of the opening in the front wall of the casing and bearing legends; disposed one above the other; I and individually; displayed. -th rough the pe gbyvve i alsm tin .mo em n o the y ke.

a r mi n t b ut, o e a m. of v sai q r having ts we endire ine on the. ra t nd its uppe end abutting the, sig ,and being normally ex-- panded to display the lower; one f the legends through the opening, the othen arm of theiyok eic rm d.--W th a QPQhxH' Q DQd c t posed in .theilllqper. pQrtion of thecase and having, an upper. arm secured, to the ,top, wall of their case and a w rv-a m ro ided with, a depe d n p a met e-ma netdis o ed-ho i o d:

secured at, one. endjto the. lit-shaped bracket be! we n t e rms ereo a es l en ma ur f t d me n a edb a de nd resilient at harms: .i r werend s cure toit clip, of he bracket andv normally, holding the armature spaced from the magnet,;.and. a pawl .,carried bythe varmature and pro eating;v therefrom and, norel r engag d i thc Q chofi he ke, t old the v Y ke r esse and e...unner. vl e d,- pl y IEQ gh the owning in the,case,.the,pawl being Withdrawn om-t e notch (permit upward movement of tthe yoke and the sign by action, of

EEEEEN ESL YQIC TED h f ll w ng-r f rences; a e o e ord in the file of this; paten UNITED s'rATE PATENTS Numbe ame I Date 873,307 Galbraith Dec. 10,1907.- 9.96 blet-a-e-m-r-r-a e Ju e 16, 92 683 rdi-son ge e-"T," A -r7 1 4 2,058,067 Durant (I) Oct. 20, 193s 293%,825. m'n. -t 7 h-Y-.- M 2 9 2,080,231 Rockola May 11, 1937 135L q ack:twat-t y 13, 1943 2,375,654 Howell May 28, 1945s 

